Car Seat for 6 month old ...

My dh has booked my lo (6 months) and I seats each on an Easyjet flight to my parents because we can take on a car seat (most airlines don't allow this) and my lo is a wriggler (to say the least!) When he was 10 & 12 weeks old he stayed happily - mostly - on my lap but now he doesn't last 5 mins!

However, the t&c's state that the seat must have a 5 point harness. We have a Maxi Cosi Cabriofix which only has a 3 point harness. I am assuming that they won't allow me to take it on the plane and will make me check it into the hold. I have considered buying a new car seat - which will last lo longer than this one (such as the Britax First Class Plus) but am worried it will be too heavy as I am travelling alone with lo.

Has anyone travelled Easyjet and used a car seat oon board or have any recommendations as to how I can get aound the problem? I tried calling their helpline and they just spouted the written t&c's to me.

Thanks. While I am asking ... as we have paid for 2 seats, can I keep the one next to me for some space? I was thinking about sitting in the middle seat and then moving to the window seat when everyone has found seats. I know I am not supposed to put my lo on a seat without a car seat - is that strictly enforced (obviously not for take off and landing ...)??

Thanks again ... OK, off to convince hubby we need to buy another car seat (we already have 2!) ...

DH bought speedy boarding for us - although I have always found Easyjet really good with their allowing 'people in need' to board early. I flew when I was 27 weeks pregnant and was given early board along with the people with children. I really appreciated not having to stand and queue (although it didn't occur to me at the time!)

Thanks for checking for me. I look forward to hearing the answers ! By the way, hubby said to go ahead and buy the seat now so I will definately be interested in which ones people use .. I think the specifications have a bigger base than the 42 cm's easyjet say though ...